baber/WOPTO huggingface dataset:
Patent GB-666131-A (GB)
Title: Improvements in and relating to tubular heat exchange elements
IPC: F22B9/04
Filed: 1948-10-01
Abstract: 666,131. Tubular heat-exchange elements; hot-water boilers. MORLE, C. W. (Brown Fintube Co.). Oct. 1, 1948, No. 25623/48. Classes 64(i) and 64(iii) A heat-exchange conduit, Fig. 2, e.g. for use in a hot-water or steam boiler, comprises a pair of substantially parallel opposed walls 40, 41 each having a plurality of heat transfer members, e.g. steel channels ,secured to the interior surface thereof and extending longitudinally of the conduit, said heat transfer members each having a base portion 52 secured to one of said walls and a fin portion 50 extending towards the opposite wall, stop means, e.g. a laterally extending plate 60, being interposed between the sets of heat transfer members carried by the respective walls and being engaged by the fin portions of both sets of heat transfer members whereby the conduit is reinforced against external pressure. The conduit shown comprises a pair of shallow flanged openended pans between the flanges 35, 36 of which is interposed end portions of the plate 60 which extends laterally across the conduit, adjacent flanges and the interposed portions of the plate being welded together. Heat transfer members may be provided on the external wall surfaces of the conduit. Hot-water boilers. In the hot water or steam boiler shown in Fig. 1 the internally finned conduits 25 extend vertically through the boiler and are secured by welding to the end walls 14, 15 thereof. Flue gases from the firebox 12 pass upwardly through the conduits 25. Water is .admitted to the boiler at 17 and is removed either as hot-water or steam through the outlet 18.
Patent GB-1341516-A (GB)
IPC: C01B7/19
Filed: 1972-06-01
Abstract: 1341516 Anhydrous hydrogen fluoride ALLIED CHEMICAL CORP 1 June 1972 [2 June 1971] 25675/72 Heading C1A Gaseous hydrogen chloride is passed into molten ammonium bifluoride to produce anhydrous hydrogen fluoride. In one embodiment, the gaseous HCl is introduced into an agitated melt of ammonium bifluoride, the solid ammonium chloride produced being removed at the same rate at which it is formed. An inert diluent such as a halogenated hydrocarbon specifically perchloroethylene or o-dichlorobenzene may be used to facilitate reaction. In another embodiment molten ammonium bifluoride at a temperature above 125‹ C. is sprayed into an enclosed reaction zone, preferably containing a fluidized bed of ammonium chloride, HCl gas being introduced at the bottom of the reaction zone. Off-gas containing HF is withdrawn near the top of the reaction zone, ammonium chloride by-product being withdrawn from the bottom at about the same rate that it is formed. The temperature of the reaction may be between 140‹ C. and 220‹ C., the pressure being atmospheric. The ammonium bifluoride may be obtained from silicon tetrafluoride present in the waste gases evolved in the treatment of phosphate rock with a strong acid.
Patent GB-459707-A (GB)
Title: Device for removing waste strips from drawing plunger dies and similar tools
IPC: B21D45/00
Filed: 1936-09-23
Abstract: 459,707. Cupping. JAGENBERG-WERKE AKT.-GES., 107, Himmelgeisterstrasse, D³sseldorf, Germany. Sept. 23, 1936, No. 25841. Convention date, Sept. 23, 1935. [Class 83 (iv)] Shearing; removing waste.-Cutting and removal of the waste ring 10, which has been cut out by the ring 7 and remains on the plunger 2 after a cupping drawing, finishing or like operation is performed by a machine in which the descending fork 12 holds the ring 10 so that on the next forward movement of the plunger 2 a scissors blade 15 thereon slips under it and on the back stroke is actuated by the lever roller 16 coming against a stop 17 to shear the ring against the other blade 14, whereupon the tensioned waste ring springs apart and drops into a trough 19. A stop 18 causes the ring to skew on the plunger and so assists in tensioning it. The other die 5 is provided with a gauging slot 6 for the blanks, the blanked out articles being received on a conveyer 8. The fork 12 is carried by a pivoted arm 11 and so is raised and lowered by a bar moving with the die slide 1 when operated by an eccentric.
Patent GB-158058-A (GB)
Title: Improvements in fasteners for steel or other metal driving bands or belts
IPC: F16G3/08
Filed: 1919-10-23
Abstract: 158,058. Steel Belts, Ltd., and Potter, B. D. Oct. 23, 1919. Belt and band fastenings.-In fasteners for steel or other metal driving-bands of the type comprising an outer jointing-piece in two parts, each having a riding-off extension, and an inner jointing-pad, the latter is also made in two parts A, A' to facilitate assembly. One end C<1> of the band is secured between the inner jointing-pad A<1> and one riding-off member B<1> by screws b<1>, which may also secure a coupling-plate D; or the said coupling-plate may be an integral extension of the member B<1>. The other end C of the band is similarly secured between the pad A and member B by short screws b, long screws being used to attach the coupling-plate D at assembly. Interengaging shoulders b<2>, d<1> on the members B, D respectively assist in positioning the parts. According to the Provisional Specification, the band is brazed, soldered, or welded between the parts A, A<1> and B, B<1>, and the members D and B, B<1> may be grooved, slotted, or undercut to assist in fitting together.
Patent GB-691543-A (GB)
Title: A process for curing glycidyl ethers and the resinous products formed therefrom
IPC: C08G59/18
Filed: 1950-10-25
Abstract: A glycidyl ether of a polyhydric phenol or a polyhydric alcohol having an epoxy equivalency greater than 1 is cured to a hard resin by a curing agent prepared by reacting such a glycidyl ether with that amount of a polybasic acid or polyamine which provides at least 1.8 acidic hydrogen atoms or amino groups, respectively for each epoxy group in the glycidyl ether used in preparing the curing agent. Specified acids are oxalic-, orthophosphoric-, phosphorous-, sulphuric-, succinic-, adipic-, phthalic-, tartaric- and tricarballylic-acids; the monoalkyl esters of orthophosphoric acid; and phenyl dihydrogen orthophosphosphate. Specified polyamines are ethylene diamine; propylene diamine; N,N1 - diethyl ethylene diamine; phenylene diamine; 2,4 - diamino - 2 - methylpentane; 3,4 - diamino - 3,4 - dimethylhexane; and 2,7 - diamino - 2,7 - dimethyloctane.  In examples a glycidyl ether of bis-(4-hydroxyphenyl)-2,2-propane is dissolved in dioxane and heated with a dioxane solution of (1) ethylene diamine; (2) diethylene triamine; and (3) phosphoric acid. The resultant curing catalysts were dissolved in ethylene glycol monomethyl ether or in dioxane and were used to cure a glycidyl ether of bis-(4-hydroxyphenyl)-2,2-propane dissolved in ethylene glycol monomethyl ether (or a mixture thereof with xylene) or in dioxane. Specifications 629,111, 659,766, 666,299, 666,300, 680,997, 681,001 and 681,991 are referred to.
Patent GB-500789-A (GB)
Title: Improvements in and relating to apparatus for administering anaesthetic gases or vapours
IPC: A61M16/10
Filed: 1938-09-07
Abstract: 500,789. Fluid - actuated valves. CARSBERG, H. W. Sept. 7, 1938, No. 26153. [Class 135] [Also in Group VI] Anaesthetic apparatus comprises a diaphragm of resilient material adapted to be moved by the breathing of the patient and located between and operating upon at least one air and at least gas or vapour valve. As shown the diaphragm 1, of rubber or thin metal, is peripherally clamped in a casing 6 and has central studs 2 engaging on one side a spindle 4 passing through a thickened portion 7 of the casing and contacting with an air-inlet flap valve 8, and on the other a spring-loaded compound lever 14, 15, 16, contacting with a spring-loaded gas-admission valve 11 having an annular seating 12, 13. Movement of the diaphragm, under the patient's inhaling effort exerted through a pipe 19, opens the valve 11 and releases valve 8 permitting the inhalation of air through a port 9 and a pipe 18. If two or more gases are supplied, a separate valve for each gas may be provided. One of the valves may be given a delayed opening, for example by applying a closing bias to valve 8 or shortening valve stem 11.
Patent GB-755218-A (GB)
Title: Improvements in the production of ethylene oxide
IPC: C07D301/10
Filed: 1953-09-23
Abstract: Ethylene oxide is produced by the catalytic oxidation of ethylene or ethylene-containing gases with oxygen or oxygen-containing gases at raised temperature and pressure in a contact tube having an internal diameter of less than 25 millimeters and made of a metal or a material having a thermal conductivity of the same order as that of a metal.  The tube may, for example, be made of silver, copper or alloy steels or of graphite or carborundum.
Patent GB-388458-A (GB)
Title: Improvements in or relating to typewriters
IPC: B41J3/37
Filed: 1931-09-18
Abstract: 388,458. Typewriters. IMPERIAL TYPEWRITER CO., Ltd. and PATEMAN, A., London Street, North Evington, Leicester. Sept. 18, 1931, No. 26209. [Class 100 (iv).] Type-lever machines.-The top member of the framework is hinged at the rear and can be raised to afford access to the type-action. In the arrangement shown in the Figure, the top plate 14, supporting the carriage 15 and ribbon spools 16, is provided with lugs 17 which are pivoted on studs 21 on the framework 10 and co-operate with stops 23 when the top plate is raised. The top plate is held in normal position by co-operation of adjustable studs 26 thereon with cam slots 31 formed in spring-urged levers 29 on the framework. When the top plate is depressed, the studs ride over inclines 36 on the levers and are engaged by the cam slots. The top plate is provided with spring pins 37 which normally rest on and hold firmly the type-action support 12. Specification 257,660, [Class 100 (iv), Typewriters &c.], is referred to.
Patent GB-873786-A (GB)
Title: Improvements in or relating to electric oscillators
Inventor: INGRAM DEREK GEORGE WOODWARD
IPC: H03B5/12
Filed: 1958-08-15
Abstract: 873,786. Automatic volume control. GENERAL ELECTRIC CO. Ltd. Aug. 5, 1959 [Aug. 15, 1958], No. 26321/58. Class 40 (4). [Also in Group XL (c)] A unidirectional amplitude modulation input at 1, 2 to an oscillator 25, 11, 12 is interrupted at oscillator frequency, in a shunt modulator 5 short-circuiting the input, by a feed-back path 23, 24, from the output of the oscillator to the modulator, of phase such that oscillations are generated and sustained. The modulator 5 may be a transistor, as shown, and the oscillator feed-back to its base shunted by a rectifier 29 to prevent positive excursions of the feed-back frequency causing reverse conduction in the transistor. The carrier interrupted modulation may then be amplified by a transistor amplifier 25, 11, 12 with Class B output stage and Zener diode 19 stabilizing the operating voltage. Alternatively the modulator may be a ring modulator series connected in the modulation input circuit. Negative feed-back may be applied by an R-C circuit from the amplifier output to the emitter of transistor 25 or by adding a rectified portion of the output in series with the input 1, 2. The amplifier output may be rectified so that it forms a D.C. amplifier. The phase of the feed-back reverses with the polarity of the unidirectional input at 1, 2 but the amplifier may have a phase/frequency and gain/frequency characteristic such that oscillation takes place at a different frequency producing a further 180 degree phase shift in the amplifier. The oscillator operates only for a minimum input at 1, 2 dependent on the temperature of transistor 5, but this minimum may be reduced by connecting the base of transistor 5 through a resistor to the negative operating voltage to bias it by an input current. The oscillator may be employed in a carrier telephony system with a pilot carrier transmitted for determining the attenuation of a network through which one or more signalling channels passes, the pilot amplitude being rectified and its difference from a reference voltage being used to control the output of an oscillator as above described whose output energizes the heater of a thermistor forming part of the attenuation network. A constant level of amplitude of the signals may thus be obtained.
Patent GB-756955-A (GB)
Title: Improvements relating to the regeneration of caustic solutions containing mercaptans
IPC: C10G19/08
Filed: 1953-09-24
Abstract: Gases containing oxygen (e.g. air), are used for regenerating caustic solutions containing mercaptans, resulting from their use in removal of sulphur compounds from petroleum hydrocarbons.  The gases are used in the form of very small bubbles as may be produced by using sintered metal distributers and feeding gas into high speed stirrers or the suction side of a centrifugal pump and are used in the absence of any organic oxidation catalyst.
Patent GB-986638-A (GB)
Title: Substituted diamines and rubbers processed therewith
IPC: C07D277/72
Filed: 1961-07-20
Abstract: The invention comprises heterocyclic-substituted aromatic diamines of the formula <FORM:0986638/C2/1> in which n and m are zero or one, n being zero when m is zero; T represents an oxazoline-2-thione or thiazoline-2-thione group which may be substituted by one or more C1- 6 alkyl groups or a C2- 7 carboalkoxy group, or represents a benzoxazoline -2 - thione or benzthiazoline - 2 - thione group which may be substituted by one or more halogen atoms, nitro groups, phenyl groups, C1- 6 alkyl groups or C1- 6 alkoxy groups, the point of attachment of the groups T being through the nitrogen atoms of the heterocyclic rings; and R represents hydrogen or a C1- 6 alkyl radical.  The above compounds are prepared by reacting a diamine of the formula <FORM:0986638/C2/2> with two molecular proportions of a 2-mercaptothiazole or 2-mercaptooxazole which may be substituted by one or more C1- 6 alkyl groups or a C2- 7 carboalkoxy group, or a 2-mercaptobenzoxazole or 2-mercaptobenzthiazole which may be substituted by one or more halogen atoms, nitro groups, phenyl groups, C1- 6 alkyl groups or C1- 6 alkoxy groups in a suitable solvent and reacting the resulting solution with at least two molecular proportions of formaldehyde.ALSO:Natural and synthetic rubber compositions are vulcanized in the presence of heterocyclic-substituted aromatic diamines of the formula:- <FORM:0986638/C3/1> in which n and m are zero or one, n being zero when m is zero; T represents an oxazoline-2-thione or thiazoline-2-thione group which may be substituted by one or more C1- 6 alkyl groups or a C2- 7 carboalkoxy group, or represents a benzoxazoline - 2 - thione or benzthiazoline - 2-thione group which may be substituted by one or more halogen atoms, nitro groups, phenyl groups, C1- 6 alkyl groups or C1- 6 alkoxy groups, the point of attachment of the groups T being through the nitrogen atoms of the heterocyclic rings; and R represents hydrogen or a C1- 6 alkyl radical.  Alternatively, the rubber compositions may be vulcanized in the presence of reactants yielding in situ the above heterocyclic-substituted aromatic diamines, viz. a diamine of the formula:- <FORM:0986638/C3/2> paraformaldehyde and a 2-mercaptothiazole or 2-mercaptooxazole which may be substituted by one or more C1- 7 alkyl groups or a C2- 7 carboalkoxy group, or a 2-mercaptobenzoxazole or 2-mercaptobenzthiazole which may be substituted by one or more halogen atoms, nitro groups, phenyl groups, C1- 6 alkyl groups or C1- 6 alkoxy groups.  Synthetic rubbers which may be vulcanized include styrene-butadiene copolymers, cis-polybutadiene, cis-polyisoprene, chlorinated butyl rubber and copolymers of styrene, acrylonitrile and mono-vinylpyridine with diolefin hydrocarbons.
Patent GB-380604-A (GB)
Title: Improvements in lamps or lanterns particularly for motor vehicles
IPC: B60Q1/14
Filed: 1931-09-23
Abstract: 380,604. Vehicle &c. lamps. BOISEN, L. C., 8, Mariendalsvej, Copenhagen. Sept. 23, 1931, No. 26590. [Class 75 (iv).] Lantern screens.- In a vehicle or like lamp in which the intensity of a portion of the beam projected by the reflector is reduced for antidazzle purposes by means of a translucent and/or coloured screen, the latter is dish-shaped and conforms substantially with the shape of the electric lamp bulb and is detachably fixed to the cap of the bulb so that the whole of the screen is separated from the bulb to permit circulation of air and avoid overheating of the bulb and/or screen. The screen may be frosted and it may be of a yellow or a yellowish-brown colour for fog-penetration purposes. In the form shown, a screen 6 is fitted over the upper half of a bulb 3 inside a reflector 1 by means of a spring stirrup. The latter comprises a semicircular part 7 adapted to engage in a channel provided at the rear upper part of the screen 6 and a pair of legs 8 which are bent upwardly within the screen, partly around the bulb cap 4, and then downwardly, one of the legs being bent into a hook 10 to engage the other leg for locking purposes. An intermediate member 9 of paper or other resilient material is interposed between the upwardly-bent portions of the legs 8 and the underside of the screen 6.
Patent GB-1049580-A (GB)
Title: Coated plastic body or sheet
IPC: C08J7/046
Filed: 1965-06-23
Abstract: A substantially linear, water-insoluble, non-gelled unsaturated polyester resin composition comprises (1) the esterification reaction product of fumaric acid and a polyethylene glycol wherein the glycol has 6 to 26 carbon atoms, said product having an acid number below 30 and (2) a glycol diacrylate which is the reaction product of a glycol selected from polyglycols having 4 to 8 carbon atoms and monoglycols having 2 to 4 carbon atoms and acrylic or methacrylic acid, the amount of component (2 is 10 to 40% by weight based on the total weight of (1) + (2).  A polymerizable styrene (3) in an amount varying between 1 and 5% by weight, based upon the total weight of (1), (2) and (3), may be added.  The polyester resin composition may be cured to produce a marresistant surface, preferably on a rigid plastic body or sheet.ALSO:A rigid plastic body or sheet is coated with a solution of substantially linear poly (allylmethacrylate), the coated body or sheet is heated to evaporate the solvent and the thus coated body or sheet is then coated with a substantially linear, water-in-soluble, non-gelled unsaturated polyester resin composition comprising (1) the esterification reaction product of fumaric acid and a polyethylene glycol wherein the glycol has 6 to 26 carbon atoms, said product having an acid number below 30 and (2) a glycol diacrylate which is the reaction product of a glycol selected from polyglycols having 4 to 8 carbon atoms and monoglycols having 2 to 4 carbon atoms and acrylic or methacrylic acid, the amount of component (2) being 10 to 40% by weight based upon the total weight of (1) + (2).  The unsaturated polyester resin composition coating is then cured to produce a mar-resistance surface on the plastic body or sheet.  To components (1) and (2) of the unsaturated polyester resin composition there may be added a polymerizable styrene (3) in an amount of 1 to 5% based on the total weight of (1) + (2) + (3). In the examples a cast sheet of poly(methyl methacrylate) is coated with a solution of poly-(allyl methacrylate) in chloroform, the sheet is warmed to evaporate the chloroform and then a polyester composition comprising triethylene glycol fumarate, tetraethylene glycol dimethacrylate and optionally styrene and catalysed with benzoyl and methyl ethyl ketone peroxides and calcium and cobalt napthenates is poured on to the coated sheet and cured.
Patent GB-883097-A (GB)
Title: Filtration plant
Filed: 1958-08-19
Abstract: 883,097. Filters. SULZER FRERES S. A. Aug. 19, 1958 [Aug. 19, 1957], No. 26659/58. Class 46. A supply pump 4, Fig. 7, withdraws water along a passage 3 from a lake or river whose level may vary and delivers it at 3a above a bed of sand 1. Filtered water is withdrawn along a discharge passage 6 by a centrifugal pump 7 and is delivered along a passage 6a which rises to a level 33 above the top 34 of the bed of sand to prevent drying out of the sand. The passage 6a leads either to a discharge pipe above an elevated reservoir or to consumption pipelines. In the first alternative, since the discharge pump 7 is operating against constant head, the rate of delivery by the pump remains constant, and consequently the velocity of flow through the sand remains constant. Preferably in that case the supply pump 4 is operated so that its minimum delivery rate (depending on the level of the raw water supply) is equal to the delivery rate of the discharge pump 7. Then, generally, supply delivery exceeds discharge delivery, the excess untreated water being discharged at 11. The overflow 11 is always provided. The pumps are driven by an electric motor 36 through a common shaft, leakages of water past two packings 37 being returned by a pipe (not shown), to the passage 3. In Fig. 4, the discharge pump 7 delivers directly to consumption points 23, so that the delivery head of pump 7 may vary on account of varying demand. When owing to increased demand the level of untreated water 19 falls, a float 21 causes a regulating pump 18, in parallel with supply pump 4, to come in to operation. In all cases, with increasing pollution of the sand, and if the discharge pump has to overcome only a small delivery head, the discharge pump automatically produces increasing suction beneath the sand, so that the rate of delivery of pure water decreases only slowly.
Patent GB-361030-A (GB)
Title: Improvements in rotary engines or pumps
IPC: F04C2/32
Filed: 1930-09-08
Abstract: 361,030. Rotary engines and pumps. TAMURA, G., 34, Mikuni-Hommachi, Higashiyodo-kawa-Ku, Osaka, Japan. Sept. 8, 1930, No. 26778. [Class 110 (ii).] In a rotary engine or pump of the kind in which a piston drum 5, mounted on a crank-shaft 6 so as to roll round the inner surface of a fixed casing 1a, carries a plate 10 adapted to slide in a slot 4 in a rocking cylinder 3, irregularity in running due to pressure in the slot 4 is prevented by providing the plate 10 with two passages 17, 18, Fig. 1, which are fitted with oppositely acting non-return valves 19, 21 and connect the slot 4 with the suction and compression spaces 11, 12 respectively. The ends of the drum 5 and the side edges of the plate 10 are recessed to receive packing-strips 33, 34, 45, 46 which are pressed outwardly against the walls of the casing by springs 29 .. 32 and 41 .. 44.
Patent GB-1094595-A (GB)
Title: Two-part adaptable pipe coupling
Inventor: DOW ALEXANDER BRIAN RODERICK
IPC: F16L21/00
Filed: 1965-06-24
Abstract: 1,094,595. Pipe couplings. RADIATION Ltd. May 25, 1966 [June 24, 1965], No. 26850/65. Heading F2G. A two-part adaptable pipe coupling comprises a resilient tube end having an external radially extending flange 4 and an internal radially extending flange 2 engageable with a pipe, such as a tap spout, and a flexible annular adapter 5 having an axial cavity complementary to said tube end so that it is a snap-fit thereover and provides an internal flange 7 engageable with a pipe, such as a tap spout, of smaller diameter than that engageable with the said flange 2. The coupling enables the tube end 1 either to be connected directly to taps having a diameter of between 5/8 and 1 inch or to be connected by use of the adapter 5 when the taps have a diameter less than <SP>5</SP>/ 8  inch.
Patent GB-153459-A (GB)
Title: Badge or ornament
IPC: A44C3/00
Filed: 1919-11-01
Abstract: 153,459. Cutler, J. M. Nov. 1, 1919. Badges.-A badge, adapted to be used also as a pendant or ornament, comprises a five-pointed star, the points 2 of which are hinged to a pentagonal centre-piece 1 so as to be foldable to form a polyhedral figure. A spring plate 5 riveted to the part 1 engages with lugs 4 on the hinged parts 2, so as to hold them open as shown in Fig. 3 or closed up as shown in Fig. 1. The various faces of the device may bear Masonic or other emblems.